package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.JSONArray;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
public class OrderServiceImpl implements OrderService {

    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private WebSocketServer webSocketServer;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;
    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;
    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    public Orders submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //异常情况的处理（收货地址为空、超出配送范围、购物车为空）
        Long addressBookId = ordersSubmitDTO.getAddressBookId();

        if(addressBookId == null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //查询当前用户的购物车数据
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(ShoppingCart.builder()
                .userId(BaseContext.getCurrentId())
                .build());

        if (shoppingCartList == null || shoppingCartList.size() == 0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }


        AddressBook addressBook = addressBookMapper.getById(addressBookId);
        //检验用户地址是否超出范围
        checkOutOfRange(addressBook.getCityName()+addressBook.getDistrictName()+addressBook.getDetail());

        //向订单表插入1条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setNumber(System.currentTimeMillis() + "");
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setPayStatus(Orders.UN_PAID);
        orders.setAddress(addressBook.getDetail());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setOrderTime(LocalDateTime.now());
        orders.setUserId(BaseContext.getCurrentId());
        orders.setUserName(addressBook.getConsignee());
        orderMapper.insert(orders);

        List<OrderDetail> orderDetailList = new ArrayList<>();

        for (ShoppingCart shoppingCart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(shoppingCart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }

        //向明细表插入n条数据
        orderDetailMapper.insertBatch(orderDetailList);

        //清空购物车
        shoppingCartMapper.deleteByUserId(BaseContext.getCurrentId());

        Map map = new HashMap();
        map.put("type",1);
        map.put("orderId",orders.getId());
        map.put("content","订单号："+orders.getNumber());

        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(JSON.toJSONString(json));
        return orders;
    }

    /**
     * 历史订单查询
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        Page<OrderVO> page = orderMapper.selectByUserId(ordersPageQueryDTO);
        for (OrderVO orderVO : page) {
            orderVO.setOrderDetailList(orderDetailMapper.getByOrderId(orderVO.getId()));
        }
        return new PageResult(page.getTotal(),page.getResult());
    }

    /**
     * 订单查询
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult list(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        Page<OrderVO> page = orderMapper.list(ordersPageQueryDTO);
        for (OrderVO orderVO : page) {
            List<OrderDetail> orderDetail = orderDetailMapper.getByOrderId(orderVO.getId());
            String dish = "";
            for (OrderDetail detail : orderDetail) {
                dish+=detail.getName()+detail.getNumber();
            }
            orderVO.setOrderDishes(dish);

        }
        return new PageResult(page.getTotal(),page.getResult());
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

        Map map = new HashMap();
        map.put("type",1);
        map.put("orderId",orders.getId());
        map.put("content","订单号："+ordersDB.getNumber());

        String json = JSON.toJSONString(map);
        //向用户端推送消息
        webSocketServer.sendToAllClient(json);
    }

    /**
     * 取消订单
     * @param ordersCancelDTO
     */
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) {
        Orders order = orderMapper.selectByOrderId(ordersCancelDTO.getId());
        order.setCancelReason(ordersCancelDTO.getCancelReason());
        order.setCancelTime(LocalDateTime.now());
        order.setStatus(Orders.CANCELLED);
        orderMapper.update(order);
    }

    /**
     * 订单状态统计
     * @return
     */
    @Override
    public OrderStatisticsVO count() {
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setConfirmed(orderMapper.confirmed());
        orderStatisticsVO.setDeliveryInProgress(orderMapper.deliveryInProgress());
        orderStatisticsVO.setToBeConfirmed(orderMapper.toBeConfirmed());
        return orderStatisticsVO;
    }

    /**
     * 查看订单详情
     * @param id
     * @return
     */
    @Override
    public OrderVO select(Long id) {
        OrderVO orderVO = orderMapper.selectByOrderId(id);
        orderVO.setOrderDetailList(orderDetailMapper.getByOrderId(id));
        return orderVO;
    }

    /**
     * 接单
     * @param ordersConfirmDTO
     */
    @Override
    public void update(OrdersConfirmDTO ordersConfirmDTO) {
        OrderVO orderVO = orderMapper.selectByOrderId(ordersConfirmDTO.getId());
        orderVO.setStatus(Orders.CONFIRMED);
        orderMapper.update(orderVO);
    }

    /**
     * 拒单
     * @param ordersConfirmDTO
     */
    @Override
    public void rejection(OrdersRejectionDTO ordersConfirmDTO) {
        OrderVO orderVO = orderMapper.selectByOrderId(ordersConfirmDTO.getId());
        orderVO.setStatus(7);
        orderMapper.update(orderVO);
    }

    /**
     * 派送
     * @param id
     */
    @Override
    public void delivery(Long id) {
        Orders order = orderMapper.selectByOrderId(id);
        order.setStatus(Orders.COMPLETED);
        orderMapper.update(order);
    }

    /**
     * 取消订单
     * @param id
     */
    @Override
    public void cancelById(Long id) {
        Orders order = orderMapper.selectByOrderId(id);
        order.setCancelTime(LocalDateTime.now());
        order.setStatus(Orders.CANCELLED);
        orderMapper.update(order);
    }

    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }

    /**
     * 客户催单
     * @param id
     */
    public void reminder(Long id){
        Orders orders = orderMapper.getById(id);
        if(orders == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        Map map = new HashMap();
        map.put("type",2);
        map.put("orderId",orders.getId());
        map.put("content","订单号：" + orders.getNumber());

        String json = JSON.toJSONString(map);
        //向客户端推送消息
        webSocketServer.sendToAllClient(json);
    }
}
